1. Biomedical Research Institute, Darfur College, Nyala, Sudan
2. Department of Medical Microbiology, Faculty of Medical Laboratory Sciences, University of Khartoum, Sudan
3. Department of Epidemiology and Health Statistics, School of Public Health, Southeast University, Nanjing, China
4. Department of Software Engineering, School of Computer Science and Engineering, Southeast University, Nanjing, China
5. Department of Surgery, School of Medicine, Darfur College, Nyala, Sudan